package thread;

import java.util.concurrent.Semaphore;

public class demo43 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        Semaphore semaphore = new Semaphore(1);
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 5000; i++) {
                try{
                    //p操作相当于加锁了
                    semaphore.acquire();
                    count++;
                    semaphore.release();//相当于解锁
                }catch(InterruptedException e){
                    e.printStackTrace();
                }
                
            }
        });
        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 5000; i++) {
               try{
                    //p操作相当于加锁了
                    semaphore.acquire();
                    count++;
                    semaphore.release();//相当于解锁
                }catch(InterruptedException e){
                    e.printStackTrace();
                }
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
    }
}
